package cn.wolfcode.luowowo.comment.service.impl;

import cn.wolfcode.luowowo.comment.domain.StrategyComment;
import cn.wolfcode.luowowo.comment.query.StrategyCommentQuery;
import cn.wolfcode.luowowo.comment.repository.IStrategyCommentRepository;
import cn.wolfcode.luowowo.comment.service.IStrategyCommentService;
import com.alibaba.dubbo.config.annotation.Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.*;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.util.StringUtils;

import java.util.Date;
import java.util.List;

/**
 * 攻略服务
 */
@Service
public class StrategyCommentServiceImpl implements IStrategyCommentService {
    @Autowired
    private IStrategyCommentRepository repository;
    @Autowired
    private MongoTemplate mongoTemplate;

    @Override
    public void save(StrategyComment comment) {

        if(!StringUtils.hasLength(comment.getId())){
            comment.setCreateTime(new Date());
        }
        repository.save(comment);

    }

    @Override
    public Page query(StrategyCommentQuery qo) {

        //repository mongoTemplate 无法直接查询出page分页数据对象，所以需要我们自己手动封装
        //拼接条件
        Query query = new Query();
        if(qo.getDetailId() != -1){
            query.addCriteria(Criteria.where("detailId").is(qo.getDetailId()));
        }
        //查总数 select count(id) from xxx where ...
        long total = mongoTemplate.count(query, StrategyComment.class);
        if(total == 0){
            return Page.empty();
        }
        //查询当前页显示
        //参数1 当前页，从0开始 参数2:每页显示条数 参数3:排序规则 参数4:排序字段
        Pageable pageable = PageRequest.of(qo.getCurrentPage() - 1,
                                                qo.getPageSize(),
                                                Sort.Direction.DESC,
                                                "createTime");

        query.with(pageable);
        List<StrategyComment> list = mongoTemplate.find(query, StrategyComment.class);
        return new PageImpl(list,pageable,total);
    }

    @Override
    public void commentThumbUp(String detailId, Long userId) {
        StrategyComment comment = repository.findById(detailId).get();
        List<Long> list = comment.getThumbuplist();
        //1: 当请求过来时，需要判断点赞用户id集合中是否有当前登录用户id
        if(!list.contains(userId)){
            //2: 如果当前用户不存在集合中，表示点赞操作，点赞树+1,，并将用户id添加到集合中
            comment.setThumbupnum(comment.getThumbupnum()+1);
            list.add(userId);
        }else{
            //3: 如果当前登录用户存在集合中，则表示取消点赞操作，点赞数-1，并将用户从集合中移除
            comment.setThumbupnum(comment.getThumbupnum()-1);
            list.remove(userId);
        }
        repository.save(comment);
    }
}
